Extraction device and method for volatile oil of traditional Chinese medicines

Abstract

The invention relates to an extraction device and method for volatile oil of traditional Chinese medicines. The extraction device comprises a traditional Chinese medicine extraction tank, a multistagecondenser and an oil-water separator, wherein the oil-water separator comprises a separation tank, an oil collection transfer tank, an online refractometer, a temperature sensor, a first control valve, a second control valve, a controller and a temporary volatile oil storage tank. On one hand, through the arrangement of a multi-stage condenser, it is ensured that only liquid enters the separationtank, and therefore, an oil-water separation interface can be accurately obtained in a subsequent layering process; on the other hand, temperature control in the oil-water separator is achieved, so the situation that the quality of the volatile oil is affected due to difficult oil-water layering caused by too high and too low temperature is prevented; and meanwhile, oil-water interface information can be accurately obtained in real time through the arrangement of the online refractometer, so the extraction quality of the volatile oil of traditional Chinese medicines is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of extraction of volatile oils of traditional Chinese medicines, relates to a device for extracting volatile oils of traditional Chinese medicines, and also relates to a method for extracting volatile oils of traditional Chinese medicines. Background technique [0002] Traditional Chinese medicine volatile oil extraction basically adopts the steam distillation extraction mode. Specifically, the medicinal materials are fed into the extraction tank for distillation, and the water vapor enters the extraction tank by manually opening the straight-through steam inlet valve connected with the extraction tank. The steam heats the extract, at this time the steam evaporates the volatile components of the extract, and condenses the medicinal ingredients to the oil collector through the condenser of the extraction equipment, and the condensed oil-water mixture is layered in the oil collector, controlled by manual or com...

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Problems solved by technology

[0003] However, in the above implementation process, if only one condenser is used for condensation, it is difficult to condense oil and water, which will affect the subsequent separation process. However, in the oil-water separation process, operators and computers are required to accurately identify the oil-water separation interface , but the system is affected by the complexity of the steam system, the proficiency of manual operation and the processing precision of the oil collector, it is difficult to achieve a smooth and stable oil collection state, and the following defects also exist in the oil-water separation process:

[0004] 1) The temperature in the oil-water separation process lacks detection and control, too high or too low temperature will affect the effect of oil-water separation, and even cause oil-water emulsification to fail to separate;

[0005] 2) The detection of the oil-water separation interface relies on manual observation, and the separation accuracy is not enough, which seriously affects the quality of the collected volatile oil

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